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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Milk is 15% ________ and 85% __________.






2. Allows extension of penis without fibro-elastic penis






3. 16-20 hours






4. 2 month growth cycle. stored in the epididymis of the bull






5. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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6. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






7. Urinary calculi.






8. 10-37 (21) days






9. Birthing process (termination of gestation)






10. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






11. Why does estrus happen before ovulation?






12. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






13. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






14. (LH) causes female's egg to break (her period)






15. Birthing process (termination of gestation)






16. Larger the cow - more milk is produced; smaller the cow - less milk is produced






17. When are dairy cattle dehorned?






18. Implies the amount of estrogen production






19. What makes the milk flow through the mammary glands?






20. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






21. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






22. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






23. Help to signal hormone levels which we need both in the brain right next to each other.






24. 336 days






25. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






26. 24 hours before end of estrus cycle






27. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






28. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






29. 336 days






30. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






31. 147 days






32. 1-2 days






33. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






34. Provide nourishment for the developing sperm






35. Failure to have both testis (gonads) descend






36. Actual heat cycle (period)






37. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






38. Days which have decreasing daylight hours

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39. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






40. Microscopic - make sure not sterile - very few bulls are actually tested






41. Milk is 15% ________ and 85% __________.






42. 19-23 (21) days






43. 45-60 days after breeding; re-breed as required






44. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






45. ~305 days (altough often longer due to breeding difficulties)






46. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






47. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






48. (FSH) causes egg to mature in females






49. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






50. Days which have decreasing daylight hours

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